Hydraulic oil-delivery system



Nov. 10, 1925- v 1,561,06 6

F. G. FARR HYDRAULIC OIL DELIVERY SYSTEM Filed Feb 9, 1922 lllllh v SMMM F EDERmK G. FTRRR.

wmww zwmm Patented Nov. 10, 1925.

FREDERICK G. FARR, OF NEW YORK, N. Y.

HYDRAULIC OIL-DELIVERY SYSTEM.

Application filed February 9,1922. Serial No. 535,425.

To all whom it may concern Be it known that I, FREDERICK G. FARR, a citizen of-the'United States of America, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Hydraulic Oil-Delivery Systems, of which the following is a specification, reference being had therein to the accompanying drawings;

The invention relates to hydraulic oil storage systems and is more particularly designed for use in connection with field tanks where large quantities of oil are stored. The present invention forms an improi-*ement upon my former Patent No.1,286,970, issued December 10, 1918. In the construction of this former patent the oilconduit is in open communication with the tank at all times and is used both for the pumping in of oil and for the withdrawal of the same. There is also provided an automatic mechanism controlling the inlet and outlet of water, such that a slight rise in'the oil level or a slight increase in pressure will open the water outlet and permit the displacement of water by the oil, vwhile a slight fall in the oil level or decrease in pressure will close this water outlet and open the water inlet,

permitting the incoming water to maintain the oil level. Therefore, the tank is always filled with liquid and by preventing contact of the oil with the air, the formation of explosive mixtures is avoided. A defect of the construction justdescribed is that there is nothing to prevent the over-filling of the tank with oil and'the'consequent wasting of the oil through the water drain connection; or, on the other hand, the over-filling of the tank with the water and the forcing of the water into the oil conduit. To guard against such defect, I have devised a construction which in the case of either emergency' will close the oil conduit and prevent further operation. The invention therefore consists in the construction as hereinafter set forth. a

In the drawing: The figure is a vertical section through a tank to which my improvements are ap-.

lied. p A is the tank which is provided with a cover B.. G is a conduit through which oil is pumped into the tank and which is also used for withdrawingthe same, This conduit extends to near the top of the tank and is normally in open communication therewith. D is a waterinlet connection at the in a float H, preferably arranged in a chamber I at thetop of the tank and connected by a rod J with a lever mechanisin-K for actuating said valve. 'The arrangement is such that whenever the level of oil in the chamber I is slightly raised,the float will lift the rod J, thereby opening the valve G to the drain E, while, on the other hand, if the level of the oil in the chamber I falls slightly, the lowering of the float and actuation of. the rod J will close the valve G and open the valve F of the water inlet D. Between these high and low levels both valves F and G will remain closed, so that communication is cut off from both the outlet and inlet. v

With such a construction it is obvious that if oil is pumped through the pipe C, it will raise the level in the chamber I and by opening the water outlet will permit the incoming oil to displace an equal quantity of water. If the rate of infeeding of the oil is 7 less than the outflow of'the water, this will at once lower the floatand close the'outlet valve, or if, on the other hand,'oil is being drawn out of the tank instead of I being forced in, the dropping of the level in the float will open the water inlet connection so that water will displace the outgoing oil.

As has been stated,"with such a construction' the conduit C is always in open communication with the tank and therefore if too great a quantity of oil is pum ed into the tank, it will be dis laced into t e drain connection and waste or if too great a quantity is drawn off, the water will rise to a point of communication with the oil conduit and be forced thereinto. To guard chamber M connected with an overflow above the highest water level under normal 'operation and this chamber is connected with a conduit N,the'1ower end of. which is in will,fill the chamber'M and lift a float O therein, which is connected by a rod P, with the mechanism for closing the valve L. If,

. on the other hand, oil being pumped intothe tank should displace the water below the lower end of the conduit N, thiswill permit the running out of the water from said conduit and the replacement of the same by oil and as the specific gravity of the oil is less than that of the water, it will rise to a higher level, filling the chamber M and zoperating the float 0. Therefore, either the over-filling of the tank with; oil or the over-filling of the same with water will cause the automatic cutting oil of the valve L. The mechanism for operatingthevalve L is merely indicated diagrammatically and it is obvious that the valve L could be either directly actuated by the' pull of the flow or by some other motive force controlled thereby.

The specific mechanisms which have been described are not essential, inasmuch as there are various ways'in which the rising of the water above the predetermined point or the falling of it below the predetermined point can automatically actuate an emergency device for closing the oilconduit.

What I claim as my invention is: 1. In a hydraulic oil storage system, the

combination with a storage tank, an oil conduit for filling and emptying said tank, water inlet and outlet connections, and mechanism for automatically controlling said inlet and outlet connections by the inflow or outflow throughsaid oil conduit to permit the displacement of water by the oil and of the o l by the water, of means operated by an abnormal change in the water lievel for closing said oil inlet and outlet conuit. I

2. In a hydraulic oil storage system, the combination with a storage tank, of an oil conduit having a normally open connection with said tank, water inlet and outlet con: nections, and means-operated bythe inflowing and outflowing of oil through said conduit for automatically controlling said water inlet and outlet connections to ermit a displacement of water by oil and o a shut-ofi' valve for said oil inlet and outlet conduit, a float for controlling, the closing of said valve, and means operated by an abnormal change in the water level for actuating said float to close said valve.

oil by water,

3. In a hydraulic oil storage system, the combination with a storage tank, of an o1l inlet and outlet conduit normally having open connection with said tank, a valve for mally filled with water, afloat chamber connected with said conduit at an r elevation above the highest water level of the tank which it is desired to permit, a float in said chamber, and mechanism for closing the valve in said oil inlet and outlet conduit controlled by the rising of the float in said chamber either by the rise of the water level in the tank above a predetermined point or the falling of the same below a predetermined point.

4. In a hydraulic oil storage system, the combination with a storage tank, of an oil conduit having a normally open connection with said tank, water inlet and outlet connections, and means operated by the inflowing and outflowing of oil through said conduit for automatically controlling said water inlet and outlet connections to permit a displacement of water by oil and of oil by water, a. shut ofl valve for said oil inlet and outlet conduit, and means 0 erated by both the abnormal rise and the a normal fall of the water level for closing said shut off valve. I

5. In a hydraulic oil storage system, the combination with a storage tank, an oil conduit for filling and emptying said tank having the. open end thereof communicating with the upper portion of said tank above the highest water level permitted, a valve for closing said conduit, water inlet and outlet connections, and mechanism for automatically controlling said inlet and outlet connections by the inflow or outflow' through said oil conduit to permit displacement of the water by the oil and of the oil by the water, a conduit having an open lower end communicating with said tank at apoint-below the lowest water level therein, 'said conduit being normally filled with water, a float elevation above said highest water level and low enough to permit filling of said float chamber when the water in the tank is at said highest level, a float in said chamber and mechanism connecting said float with said valve operable upon the filling of said float chamber.

In testimony whereof I afiix m signature.

FREDERICK FARR.

'chamber connected with said conduit at an 

